Mining machine



March 14, 1933. E. SIMMONS MINING MAoHNE Filed Deo. 24, 1950 4 Sheets-Sheet March 14, 1933. y E SM'MONS 1,901,127

MINING MACHINE Filed Deo. 24, 1950 4 Sheets-Sheet 2 linfa/nfi- Lea//ZEI Sim/720121? MIM@ March 14, 1933. .y E slMMQNs 1,901,127

MINING MACHINE Filed Dec. 24. 1950 4 Sheets-Sheet 5 Iazvevzfzw: Leoni? .Jimmww- March 14, 1933. 1 E. SIMMONS MINING MACHINE Filed Dec. 24, 1930 4 Sheets-Sheet 4 Patented Maf. 14, 1933 LEON E. SIMMONS, 0F CLAREMONT, NEW HAMPSHIRE, ASSIGNOR TO SUIIDIVAN4 MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS MINING MACHINE Application filed December, 1930. Serial 1\To. 504,610.V

This invention relates to mining machines, and more particularly, but not exclusively, to coal mining machines of the shear cutter type adapted to cut vertical lrerfs in the coal.

An object of this invention is to provide an improved coal mining machine. Another object is to provide an improved coal mining machine of the wheel mounted, track supported type adapted to insert vertical or shear cuts in the coal. Still another object of this invention is to provide an improved mining machine of the wheel mcunted,track supported type having improved kerf cutting mechanism and improved means for operating the cutting mechanism, for guiding the cutting mechanism during thecutting operation, and for propelling the machine about the mine. A still further object is to pro vide an improved shearing machine of the self-propelled, truck mounted type wherein improved means are provided. for moving and guiding the shear cutting mechanism relative to the truck during the cutting operation, for positioning the cutting mechanism.

relative to the coal face and for propelling the truck along the mine trackway during transport. Yet another object of this invention is to provide an improved coal mining machine of the wheel mounted track supported type having a guideway for guiding the cutting' mechanism during the cutting operation and having associated therewith improved power operated means for adjusting the O'uideway relative to the truck. A still further object is to provide an improved coal mining` machine whereinv a guideway is employed for guiding the cutting mechanism during the cutting operation and having im.

proved power operated means for feeding the cutting mechanism along the guideway and for swinging the guideway relative to the truck. These and other objects of the invention will, however, hereinafter more fully appear.

The invention is exemplified in the novel combinations and arrangements of parts shown in the accompanying drawings, and described in the following specification, and as more particularly pointed out in the Vappended claims.

In the accompanying'l `drawings 'there is shown for purposes of illustration one .form which the invention may assume in practice. i

In these drawings,-` Fig.. l is a planvievv of an illustrative embodiment of the improved mining machine;

Fig. 2 is a side elevational view of the machine shown in Fig. l;

Fig. 3 is an enlarged' fragmentary side elevational lView of the machine shownin Fig. 2; Fig. t is a transverse vertical sectional view taken substantially on line ld-4 of Fig. Fig. 5 is adetail sectional view taken sub1- stantially on line 545 of Fig. 4';

Fig. @is a transverse vertical sectional view taken substantially on line 6&6 of Fig. 2;

Fig. 7 is a horizontal sectional view taken substantially on line 7 -7 of Figs-2 and 3;

Fig. 8 is a detail sectional View taken substantially on line 8`8 of Fig. 4;

Fig. 9 is a transverse vertical sectional view takenl substantially on line 9 9 of Figs. 2 and 3;

Fig. l() is a detail sectional view taken on line 10-10 of Fig. 9;

Fig. 11 is a detail sectional view illustrating the locking mechanism for preventing tilting and lateral movement lof the guiding frame; and

Fig. l2 is a detail view illustrating the` lock or stop member for holding the sliding support for the cutting mechanism in its rearmost position on the guiding frame.

In this illustrative embodiment vof the invention thereis shown a coal mining machine of the wheel Vmounted lshear cutter type adapted to operate while supportedby a mine trackway and herein of the same general type as that disclosed in the copending application to Morris P. Holmes, Serial No. 467 ,7 91. tiled July 14th', 1930, with certain modifica.- tions and improvements embodied therein as hereinafter described. j This machine `generally comprises a wheeled truck l, an elongated swiveled guiding frame 2 arranged horizontally on the truck and having an adjustable front support,

kprov-ed'mechanism 5 for moving the cuttingV mechanism along the guiding frame 2 and for swiveling the guiding frame horizontally relative to the truck. The guiding frame 2 is mounted at the forward end of the truck for horizontal swinging ,v movement relative Y thereto about a vertical axis 6. The guiding frame 2 is adapted to be swiveled into differwill be observed that the same herein com-V prisesa truck frame 7 supported by wheels 8 adapted to travel along a mine traclway 9.

Supported at the forward 'end of the truck c frame 7, herein directly above the front truck wheel axle as shown in Fig. 4, is a horizontal swivel plate 10 having secured thereto, be-

neath the same, an annular frame or swivel 35. bers 17 of the truclr frame.

bearing l1l carrying series of horizontal and vertical rollers 12 and 13 journaled on pins 14 and 15V respectively, carried'by the frame 11. The' horizontal Vrollers 12 engageV the inner periphery of an annular guide or bearing housing 16 secured tothe angle members 17 of the truck frame while the `vertical rollers engage the upper surface cfa horizontal plate -18 likewise secured to the angle mem- These elements form a horizontal turntable structure on which the guiding frame 2 is mounted for horizontalv swinging movement relative to the truck. As shown in Figs. 2 and 4, rigidly attached to the swiveled plate 10 at the outer sides thereof are angle members 19, 19 having vertical ianges rigidly secured to the depen@- ing lianges of the parallel longitudinal cxtending angle vmembers 20, 20 Vof the guiding frame 2. These angle members 20, 2O extend a substantial distance forwardly and rearwardly of the turntable structure with the rearwardly extending portions thereof overlying, when the parts are in the position shown in Fig. 1, the truck. Y

Any suitable means may be employed for` holding the elongated guiding frame 2 against vertical tilting movement and lateral swinging movement relative to the truck` when the guiding frame is in the position shown in Fig. 1, i. e., the transport position, andV for illustrativepurposes are shown as herein comprising a transverse supporting member or support abutment 22 carried by the truclr and on which the rear end of the guiding frame 2 rests when the frame is in its central longitudinal position shown. Suitably jour naled within bearings carried by the angle members 17 of the truck frame is a transverse rod 23 having secured thereto an operating handle 24. Also attached to this rod are vertical stop plates 25, which, when the parts are swung in the position shown in Fig. 11, engage the outer surfaces of the depending iianges of the angle members 20, 2O of the guiding frame, and these stop members, when so positioned, prevent lateral swinging movement of the guiding frame relative to the truck.V TWhen these stop members are swung downwardly out of engagement with the guiding frame, the latter may be swung horizontally relative to the truck as hereinafter to be described. To prevent vertical tilting movement of the guiding frame relative to the truck, there is provided in one of the stop plates 25 a slot 26 adapted to engage a projecting pin 27 secured to one ofthe angle members of the guide frame, and this slotted member and pin cooperate to hold the guiding frame down in posi tion against the transverse support abutment 22. A suitable latch28 carried by the stop plate'V which is slotted, is adapted releasably to cooperate with the pin 27 to hold the stop plates in position. Y rlhe guiding Vframe 2 forms an elongated guideway or track for the'kerf cutting mechanismV Salo-ng which the latter moves during the cutting operation, and this kerf cutting mechanism includes a frame or sliding support 30 having guide plates or shoes 31 attached to thelower portion thereof forV slidably engagingthe upper plane surfaces of the horizontal flanges of the angle members 20, 20 of thel guide frame. rEhe frame or support 30 has a depending portion presenting4 parallel lateral guide surfaces 32, 32 engaging the inner vertical surfaces of the angle members 20, 20, as shown 'in Fig. 4. For holding the sliding support 8() in position onthe guiding frame, that is, to prevent ver tical displacement of the support from the guide, there are provided angle members 33 secured to the sides ofthe support 30 and having inwardly projecting horizontal flanges underlying the outwardly extending horizontal flanges of the angle members 20, 20 of the guiding frame. It will thus vbe seen that the structure described Vabove forms a sliding support for the kerf cutting mechanismand is slidable longitudi nally of the guiding frame between the ends thereof, as hereinafter described.

Now referring to the lierf cutting mechanism, and more particularly to the driving mechanism for the cutting' mechanism, it will be observed that mounted upon the sliding frame 30 at the rear thereof, as clearly shown in Fig. 7, isa horizontal motor 34 having its power shaft 35 horizontally disposed and extending transversely of the support. Attached te one end of the motor power shaft is a spur pinion 36 meshing with an intermediate or idler gear 37 journaled on a stub shaft 38 suitably supported within a gear Vhousing.39 attached to one side of the support 80. This idlerv gear 37 meshes With a spur gear 40 keyed to a horizontal shaft 41 arranged parallel with the motor shaft and suitably journaled Within bearings 42 carried by the support 30. Herein formed integral With the shaft 41, at the opposite end thereof from the spur gear 40, is a spur pinion 43 meshing with a large spur gear 44 Which herein constitutes the main driving gear for the cu ting mechanism. This gear has a hub portion 45 mounted on a horizontal transversely extending shaft 46 arranged parallel with and in advance of the shaft 41. Surrounding the hub 45 of the gear 44 is a sleeve 47 wiich also forms a part of the bearing structure for the driving parts. Secured to the hub 45 by bolt 48 is the hub of a bearing member 49 supporting a bearing sleeve 50 on which a chain sprocket 51 is journaled. This chain sprocket is connected by a semi-permanent clutch 52 to the sleeve 47 and engages and drives an endless cutter bit carrying cutter chain 53 mounted-for orbital movement on the margin of an elongated plane cutter bar 54. rihis cutter bar is adaoted'to swineA drical bearing memberv 58 rotatably supporting the outer extremity of the transverse shaft 46. Secured to a flange-like portion of the hub 55 secured to the cutter bar is a frame member 59 in turn secured to a `bearing member 60 rotatably mounted in a bearing sleeve 61 likewise mounted Within the support 30. It Will thus be seen that the frame members 55, 58 and 6() form a horizontal pivotal support for the cutter bar. As illustrated,'the spur gear 44 is connectible to the sleeve 47, to which the chain sprocket 51 is connected, by means of a sliding` pin clutch 62 including` clutch pins 68 slidably mounted in apertures 64 formed in the hub of the gear 44. rl"hese pins when in their connected position (as shown in Figs. 4 and 7 proj ect Within sockets 65 formed in the inner surface of the bearing sleeve 47. For sliding the clutch pins in and out there is provided reciprocable shipper members 66 guided Within suitable bores formed Within the bearing frame 60 and interlocked at their outer ends with inwardly projecting flanges formed on the clutch pins nula r shipper member G7 having any suitable shifting means. It Will thusV be seen that when the pin clutch 62 is in its connected position as shown in 4, the cutter chain 58 may be operatively connected to the motor through the spur gearing 36, 37, 40, 43

n rlhe members 66 are attached to an an-` and 44. Upon release of the pin clutch 62 the cutter chain may remain idle duringv runing of the motor.

ln specifically describing the improved mechanism for swingingthe cutter bar about W0 its pivotal axis, it Will herein be noted that 'the hub 45 (see Figs. 4 and 7 is keyed to the shaft 46 and drives the latter. This shaft is journaled Within a bearing sleeve 68 supported Within the cutter-bar support 60 and has fixed thereto at its inner end a bevel pinion 69 meshing with reverse bevels 7 0 and 71. These reverse bevels are journaled on bearings supported Vby a vertical shaft 72 in turn journaled Within bearings carriedf by the )so sliding support 80. rlhe reverse bevels 70, 71 are selectively connectible to the shaft 72 by multiple disc clutches 7 3 and 74 respectively, having` suitable operating means so that when one is applied the other is released. The l* lower end of the vertical shaft 72 :is-keyed to an alined shaft 75 suitably journaled Within the support 30. Keyed to the shaft 75 is a clutch member 7 6 which is connectibleby a sliding dental clutch 77 to a clutch member 78 keyed to a-Worm 79. lVhen the clutch 77 Vis connected the Worm 79 is driven at arelatively high speed directly by the shaft 72 and in either of opposite directions under the control of the clutches 7 3, 74. To effect drive of the Worm 79 at a relatively slow speed there is formedintegral with the shaft 72 a spur pinion 80 meshing' with a spur gear 81 keyed to a vertical shaft 82 arranged parallel with Y. the sha-ft 75 and'lilreWise suitably journaled Within the support 30. leyed to the lower end of the shaft 82 is a spur pinionV 83 meshing; With a spur gear 84 arranged coasially with the shaft 75 and suitably journaled Within the support 80. Keyed to the hub of the lgear 84 is a clutch member 85 Which is connectible by a sliding dental clutch 86 to a clutch member keyed to the Worm 79. It Will thus be seen that when the clutch 86 is connected and the clutch 77 released, the Worm 79 may be driven in eitherof opposite directions, under the control of the reverse clutches 7 3, 74, at a relatively lovv speed through the spur gearing 80, 81, shaft 82, spur gearing 88, 84. yllhe Worm 79 meshes with a Worm Wheel 87 (see Fig. 6) keyedto a. horizontal shaft 88'. This shaft extends transversely of the support 8O parallel with the shafts 41, 46 and is likewise suitably journaled Within the `support. lllerein, formed integral with the' sh aft 88 is a spur pinion 89 meshing` With an intermediate or idler gear 90 suitably journaled on a stub shaft 91 supported by the frame 89. The idler gear 90 meshes with. the teeth of a 'egcar segment or arcuate rack 92 herein formed integral with the frame 59 secured to ist @he pivotal supporting frames 55, 60 forthe @new may be swung in either of opposite directions sie driving gear 127 of the truck driving mechanism on the truck. It will thus be seen that when the sliding support 30 of the cutting mechanism is in its rearmost position on the guiding frame, as shown in Figs. 2 and 3, the idler gear 126 on the sliding support 30 meshes with the initial driving gear 127 on the truck. YWhen the gears 126, 127 are in meshing engagement, they are held in this position by means of abutment pin 119 which, as previously mentioned, when inserted in the aperture 120 in the side of the guiding frame, projects into the path of the sliding support of the cutting mechanism thereby preventing forward movement thereof along the guiding frame 2.

The driving connections between the initial driving gear 127 on 'the truck and the truck wheels will now be described. The gear 12'? is keyed to a vertical shaft 128 suitably journaled within a gear housing 129 supported by the truck frame. Fixed to the shaft 128 is a worm 130 meshing with a worm wheel 131 suitably journaled within the gear housing. rlhis Worm wheel is connectible by a friction clutch 132 of the internal expanding type to a Vhorizontal shaft 133 arranged transversely of the truck and suitably journaled Within the gear housing. The operating means for the clutch 132 includes an axially movable clutch applying member 13-1- having a cooperating pivoter shipper member 135 connected by a link to a` pivoted operating handle 136. As shown in Fig. 9, keyed to one end of the shaft 133 is a chain sprocket 137 connected by an endless chain 133 fo a chain sprocket 139 secured to the rear truck wheel axle. The front and rear truck wheel axles are connected in driving relation by a usual chain and sprocket connection 1110, as shown in Fig. 2. It will thus be seen that when the clutch 132 is applied, the truck wheels may be driven at a relatively high transport speed from the inotor through the spur gearing 36, 37, 10, 42 and 1li, bevel gear 69, one or the other of the reverse bevels 70, 71 (depending upon which of the reverse frictions 73, E is applied), shaft 72, shaft 75, spur gear 106, 107', 103, worm gearing 130. 131, transverse shaft 133, and t .e chain and sprocket connection 137, 138, 139 connected to the truck wheels.

The operating means for the various clutches above referred to may assume various forms but are herein of the same type as those disclosed in the above mentioned Holmes application ask also is the truck wheel brake and the adjustable front support for the guiding frame. The general method of operation also is the same as that described in the Holmes application, and as the `general mode of operation of a machine of the type disclosed is well known and as the mod-e of use of the improved feeding means'for the cutting mechanism and the vmeans for swinging the guiding frame relative to the support have been described above in detail, further description thereof is thought unnecessary other than to state that the guidically described one form which this invention may assume in practice, it will b-e understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from ifs spirit or the scope of the appended claims.

VVha-t I claim as new and desire to secure by Letters Patent is:

1. 1n a mining machine, a portable support, a guidingl frame pivotally mounted on said support forl horizontal swinging movement relative thereto, kerf cutting mechanism mounted on said guiding frame for bodily movement therealong including a pivoted kerf cutter swingable in a vertical plane at one side of said guiding frame and arrangedto cut, during movement of said kerf cutting mechanism along said guiding frame, a kerf parallel to the direction of such movement, and motor operated devices for feeding said cutting mechanism relative to said guiding frame, for swinging said kerf cutter, and for swinging said guiding frame relative to said support.

2. In a mining machine, a portable support, a guiding frame pivotally mounted thereon for horizontal swinging movement relative thereto, kerf cutting mechanism mounted on said guiding framelfor bodily movement therealonglincluding a pivoted kerf cutter swingable in a vertical pla-ne at one side of said guiding frame and arranged to cut, during movement of said kerf cutting mechanism along said guiding frame, a kerf parallel'to the direction of such movement, motor operated devices for swinging ment relative thereto, kerf cutting :mecha-V a portable supi f said su 'ort for horizontal swinfrin movement relative thereto, kerf cutting mechanism mounted on said guiding frame for n bodily movement therealong` including a pivoted kerf cutter and a driving motor, and devices driven by said motor for swinging said guiding frame relative to said support and for feeding said cutting mechanism relative to said guiding frame including an endless flexible element guided on said guidfing frame and a rotatable power driven memberV carried by said cutting mechanism and engaging said flexible element.

Y 5. ln a mining machine, ak portable support, aguiding frame pivotally mounted on said support for horizontal swinging move- Y ment relative thereto, lrerf cutting mechanism mounted on said guiding frame for bodymovement therealong including a pivoted kerf cutter and a driving motor, and` devices driven by saidmotor for swinging saidguiding frame Vrelative to said support and for feeding said cutting mechanism relative to said guiding y frame including an endless flexible element and a rotatable power driven member disposed on a horizontal anis and engaging said iiexible element.

v6. ln -a mining machine, a portable support, a guiding frame pivotally mounted on said support for horizontal swinging movement relative thereto, lrerf Vcutting mechanism mounted on said guiding yframe for 'bodily movement therealong including a s pivoted herf cutter and a driving motor, and

devices driven by said motor Vfor swinging said guiding frame relative to said support and for feeding said cutting mechanism relative to said guiding frame including an endlessflenible element guided on said guiding frame and a rotatable power driven member disposed on a horizontal axis and carried bysaid cutting mechanism and engaging said flexible element. Y Y y 7, ln a mining machine, a portable support, a guiding frame pivotally mountedV thereon for .horizontal swinging movement relative' thereto, kerf Ycutting mechanism mounted'onsaid guiding frame comprising a sliding support anda korf cutter pivotally` mounted thereon, `a motor carried by said y sliding support,devices driven bysaid motor for swingingsaid guiding frame relative to said portable'support i and for sliding said n cutting mechanism support bodily'relative to said guiding frame including an endless flexible element guided on said guiding frame at one side and at the ends thereof and a rotatable driving member disposed on a horizontal axis at one side of said sliding support and engaging said flexible element.

8. In a mining machine, a wheeled truck adapted to travel along a traclrway, a guiding frame pivotally mounted on said truck for horizontal Swingin 0' movement relative thereto, devices for locking said guiding frame in its central longitudinal transport position on the truck, motor operated devices for swinging said guiding frame relative to said truck, kerf cutting mechanism mounted onsaid guiding frame for bodily movement therealong during the cutting operation and arranged to cut, during such bodily movement, a lrerf in a plane parallel to the direction of such movement, the cutting mechanism including a rotatable power driven element, devices carried by said truck-for driving the truck wheels and including an element driven by said power driven element, and means for holding said cutting mechanism on said guiding frame with said power driven element in driving engagement with said driving element on the truck.

9. In a mining machine, aV wheeled truck adapted to travel along a traclway, a guiding frame pivotally mounted on said truck for horizontal swinging movement relative there- Y to, lrerf cutting mechanism mounted on said guiding frame for bodily movement therealong and including a motor, devices driven by said vmotor for swinging said guiding frame relative to said truck and for moving said cutting mechanism relative to said guiding frame during the cutting operation, and

truck wheel driving means including a driving element on said cutting mechanism and driven by said motor, a driven element on the truck and means for maintaining said elements in driving relation when said kei-f cutting mechanism is in a predetermined position Von said guiding frame.

l0. In a mining machine, a wheeled truck adapted to travel along a traclway, a guiding frame pivotally mounted on said truck i for horizontal swinging movement relative thereto, lrerf cutting mechanism mounted on said guiding vframe ffor bodily movement therealong and including a motor, devices driven by said motor for swinging said guiding` frame relative to said truclr and for moving said cutting mechanism relative to said y guiding frame during the cutting operation, means for locking said guiding frame and cutting mechanism in a predetermined position on said truck, and truck wheel driving means including a driving element on said cutting mechanism and driven by said motor, a driven element on the truck and means for maintaining said elements in driving relation iol) Leonie?- adapted to travel along a traclrway, a guiding frame pivotally mounted on said truck for horizontal swinging movement relative thereto and extending a substantial distance in advance of the front truck Wheels, kerf cut- 1G ting mechanism mounted on said guiding frame for bodily movement therealong during the cutting operation,and arranged to cut, during such bodily movement, a kerf in a plane parallel to the direction of such movement, means for swinging said guiding frame relative to said truck and for moving said cutting mechanism relative to said guiding frame, means for locking said guiding frame and cutting mechanism in a predetermined position on said truck, and truck wheel driving means including a power driven element carried by said cutting mechanism and an element on said truck, said elements being in driving engagement when said guiding frame and kerf cutting mechanism are in aforesaid predetermined position. A

12. In a mining machine, a wheeled truck adapted to travel along a tracliway, a guiding frame pivotally mounted on said truck for horizontal swinging movement relative thereto, lrerf cutting mechanism mounted on said guiding frame for bodily movement therealong and having lcutting devices ar- .ranged to cut, during such longitudinal movement of said lrei'f cutting mechanism along said guiding frame, a kerf parallel to the direction of such movement, motor operated devices for swinging said guiding frame relative to said truck and for moving said cutting mechanism relative to said guiding frame, said frame swinging and cutting iechanism moving devices including conimon actuating means and means for holding an element of said actuating means stationary to effect one of aforesaid operations.

13. ln amining machine, a portable support, a guiding frame pivotally mounted on said support for horizontal swinging movement relative thereto, herf cutting mechanism mounted on said guiding frame for bodily movement tlierealong during the cutting operation including a pivoted lrerf cutter and a driving motor, and devices driven by said motor for swinging said guiding frame relative to said support and for moving said cutting mechanism at a cutting speed relative to said guiding frame including an endless liexible element and a rotatable power driven member engaging said ilexible element. Y

14:. In a mining machine, a portable support, a guiding frame pivotally mounted on said support for horizontalswinging movement relative thereto, lrerf cutting mechanism mounted on said guiding frame for bodily movement tlierealong during the cutting operation including a pivoted kerf cutter and a driving motor, and devices driven by said motor for swinging said4 guiding frame relative to said support and for moving said cutting mechanism at a cutting speed relative to said guiding frame including an ,endless flexible element guided on said guiding frame and a rotatable power driven member carried by said cutting mechanism and engaging said flexible element. i

in a mining machine, a portable support, a guiding frame pivotally mounted on said support for horizontal swinging movement relative thereto, kerf cutting mechanism mountedon said guiding frame for bodily movementtherealongl during the cutting operation including a pivoted lrerf cutter and a driving motor, and devices driven by said motor for swinging said guiding.`

frame relative to said support and for feeding said cutting mechanism `at a cutting speed relative to said guiding frame including an endless flexible element and a rotatable power driven member disposed on a horizontal axis and engaging said flexible element.

16. In a mining machine, a portable support, a guiding frame pivotally mounted on said support for horizontal swinging movement relative thereto, kerf cutting mechanism mounted on said guiding frame for bodily movement therealong during the cutting operationV including a pivoted kerf cutter and a driving motor, and devices driven by said motor for swinging said guiding frame relative to said support and for feeding said cutting mechanism at a cutting speed relative to said guiding frame including an endless flexible element guided on said guiding frame and a rotatable power driven meinber disposed on a horizontal axis and carried by said cutting mechanism and engaging said flexible element. Y

17. ln a mining machine, a portable support, a y guiding frame pivotally mounted thereon for horizontal swinging movement relative thereto, lerf cutting mechanism mounted on said guiding frame comprising a sliding support and a lrerf cutter pivotally mounted thereon, a motor carried by said sliding support, devices driven by said motor for swinging said guiding frame relative to said portable support and for sliding said cutting mechanismsupport bodily ata cutting speed relative to said guiding frame dui'- ing the cutting operation including an endless ileXible element guided on said guiding frame at one side and at the ends thereof and a rotatable driving member disposed on a horizontal axis at one side of said sliding support and engaging said flexible element.

18. ln va mining` machine, al wheeled truck adapted to travel along a trackway, a guiding trame' pivotally mounted on said truck for horizontal swinging movementrelative theretmlrerf cutting mechanism mounted on `said guiding trame for bodily movement oted hert cutter swingable vertically relative to said trame to make a shear cut and a driving motor therefor, and devices driven by said motor tor swinging said guiding trame relative to said support and for moving said cutting mechanism relative to said guiding frame including an endless flexible element and a rotatable power driven member engaging said iieXible element.

20. ln a mining machine, aportable support, a guiding frame pivotally mounted on said su )port Jfor horizontal swinOinO moven C2 C ment relative thereto, fert cutting mechanism mounted on said guiding trame for bodily movement thei'ealcng including a pivoted hert cutter swingable vertically relative to said trame to make a shear cut and a drivingmotor therefonand devices drivenby said motor for swinging said guiding frame relative to said supportI and for moving said cutting niechanisl relative to said guiding trame including an endless tlexible element guided on said guiding frame and a rotatabley power driven member carried by said outting mechanism and engaging said flexible element. p

`ifi.' ln a mining machine, a portable support, a guiding frame pivotally mounted on Y said support for horizontal swinging movetee ment Vrelative thereto, hert cutting mecha- Vnism` mount-ed on said guiding `frame for bodily movement therealong including a pivoted korf cutter swingable vertically relative to said trame to mal-Ie a shear cut and a. driving'm'otor therefor, and devices driven by said motor lor swinging saidguiding frame relative to said support and for moving said cutting mechanism relative toV said guiding frame including endless Flexible element and a rotatable powerdriven member disposed 'on a horizontal axis and engaging sail flexible element.

22. ln a. miningmachine, a portable sup- Vport, aV guiding y:trame pivotally mounted on said support for horizontal swinging movement relative thereto, kort cutting mechanism mounted on said guiding frame for bodily movement therealong including a pivoted hert cutter swingable vertically relative to said trame to make a shear cut and a driving motor therefor,and devices driven by said motor :tor swinging said guiding frame relative to said support and for moving said cuttingmechanism relative to said guiding trame v including an endless flexible element guidedV on said guiding frame anda rotatable power driven member disposed on a horizontal `airis and carried by said cutting mechanism and engaging said flexible element.

23. ln a mining machine, a portable support, a guiding frame mounted on said support for horizontal swinging movement relative thereto about a vertical axis, hert cutting mechanism mounted on said guiding 'trame for bodily movement therealong durf ing the cutting operation, and motor operated devices for swinging said guiding frame relative to said support and for moving said cutting mechanism at a cutting speed relative to said guiding frame, said trame swinging devices including a motor movable with said cutting mechanism along said guiding frame, and connections driven by said motor including a gear mounted on said guiding jirame and movable therewith and a stationary gear on said support with which said first gear meshes. y

24. ln a mining machine, a portable support, a guiding frame pivotally mounted on said support for swinging movement relative thereto, hert cutting mechanism mounted on said guiding trame for bodily movement therealong during the cutting operation including a pivoted hert cutter, Vmotor operated devices for feeding said cutting mechanism at a cutting speed relative to said guiding frame to cut a lrerf parallel to the direction of such feed and for swinging said hert cutter, andinotor operated devices for swinging said guiding frame relative to said support and including a frame swinging element on said support and arranged coaxially with the trame pivot.

Q5. ln a. mining machine, a portable support, a guiding trame pivotally mounted on said support for swinging movement relative thereto, hert cutting mechanism mounted on said guiding trame for bodily movemen therealong during the cutting operation and including a pivoted hert cutter, motor operated devices for swinging said hert cutter and for driving said cutting mechanism, and motor operated devices for feeding said cutting mechanism at a cutting speed relative to said guiding frame to cut a hert parallel. to the direction of suchfeed and for swinging said guiding frame relative to said support, said :trame swinging devices including trame swinging element arranged coaXially with the trame pivot.

26. ln a mining machine, a. portable support, a guiding frame pivotally mounted on said support for horizontal swinging movement relative thereto, kerf cutting mecha1 nism.mounted on said guiding frame forl 5 bodily movement therealong during the out ting operation and including apivoted kerf cutter, and motor operated devices for feed ing said cutting mechanism at a [cutting speed relativeto said guiding frame to cut a kerf parallel tothe direction of such feed, yfor swinging said kerf cutter, and for swinging said guiding frame relative to said support, said-frame swinging devices including a frame-swinging element arranged coaXi` ally with the trame pivot.A I

27. In a mining machine,-a portable support, Va guiding frame pivotally mounted on said support for horizontal swingingv movement relative thereto, kerf cutting mechanism mounted on said guiding vframe .for bodilyfmovement therealong during the cuttin'g operationv and including apivoted kerf cutter and a driving motor,and' devices drivenby saidmotor for swinging said guiding frame relative to said support and'for feed` ing said cutting mechanism at a cuttinv speed relative to said guiding frame, said frame swinging devices including la lfra-me swingingelement arranged coaXially with the frame pivot.Y s l 28.In a fmining machine, a wheeledtruck vadapted to travel along atrackway, a guid` ing frame pivotally mounted on said truck for horizontal swinging' movementl relative thereto, kercuttingmechanism mounted on saidA guiding frame for y Vbodily movement therealong during the cutting operation and including a kerf cutter adjustable relative to said frame and arranged to tout, during movement of said'kerf cutting. mechanism along said guiding frame, a kerf parallel to the direction of movement of said 'kerf `cuts` ting mechanism along said guiding vframe, and motor operated devices for` swinging said guiding frame relative to said truck. for ad` justing said .kerf cutter and` for movingv said cutting mechanism at a cutting speed. along said guiding frame, said` frame swinging devices including a frame swingingl element arranged coaxially with; the frame pivot. y

29. In a mining machine, ka Wheeled truck adapted totravel along a trackway, a guiding frame pivotally mounted on said truck for horizontal swingingmovement relative thereto, kerf cutting mechanisml mounted on said guiding frame for bodily movement therealong'during the cutting operation and arranged to cut, during movement of said kerf cutting mechanism along said guiding 65 tingmechanism ata cuttingspeed along said tive thereto, kerf lcutting mechanism mounted trame, a kerf parallellto the direction oi4 guiding Iframe and for `driving the truck wheels, said frame swinging devices including a frame lswinging element arranged coaxially with the frame pivot.

30. Ina mining machine, a wheeled truck adapted totravel along a trackway, a guiding frame pivotally mounted onsaid truck for horizontal `swinging vmovement relative thereto, kerf cutting mechanism mounted on said guiding frame for bodilyy movement therealong during the cutting operation and including a kerf cutter adjustable relative to said frame and arranged to cut, during movement ofsaid kerf cutting mechanism along said guiding vframe, a kert parallel tothe direction of movement of said kerf cutting mechanism along said guidingframe, motor operated devices for swinging said guiding frame relative to said truck, for adjusting said kerf cutter and for 'moving said cutting mechanism at a cutting speed relative to said guiding frame,'said frame swinging and cutting mechanism moving devices vincluding commonactuating means and a Atrame swinging element actuated thereby and arranged coaxiallywith the frame pivot.

81. In a mining machine, a portable support, a Vguiding trame pivotally mounted on said support for-swinging movement relaon said guiding frame for bodily movement therealong during the cutting operation ineluding apivoted kerf cutter and a driving motortherefor, and devices driven by said motor formoving said cutting mechanism at a cutting. speed relative to 'saidf guiding frame, for swingingsaid kerf cutter and Jfor swinging said guiding frameA relative to said support, said frame swinging devices including aframe swinging element arranged coaXially with the frame pivot. l l f v 32. In a mining machine, a portable support, a guiding frame rpivotally mountedV on said support for horizontal swingingy movement relative thereto, kerf cutting mechanism mounted on said guiding frame for bodily movement therealong duringrthe cuttingr operation including a pivoted kerl cutter and a driving motor therefor, anddevices driven by said motor Vfor moving said cutting mechanism at a cutting speed relative to said guiding frame, for swinging said kerf cutter and for swinging said guiding frame horizontally relative to said support, said frame swinging devices including a frame swinging element arranged coaxially with the frame pivot. i i

Y 33. In a mining machine, a wheeled truck adapted to travel along a trackway, a guiding iframe pivotally mounted on said truck for horizontal swinging movement relative thereto, kerf cutting mechanism mounted on said guiding trame for bodily movement therealong during the cutting operation'and including a kerf cutter adjustable relative to said frame and a driving motor therefor,-and devices driven by said motor for swinging said guiding frame relative to said truck, for adjusting said kerf cutter and for moving said cutting mechanism at a cutting speed along said guidingirame, said -rame swinging devices including a fra-me swinging element arranged coaxially vwith frame pivot.

V34. In a mining machine, a portable support,V a guiding frame pivotally mounted on sa-idsupport `for swinging movement relative thereto, kerf'cutting'mechanism mounted on saidV guiding frame for bodily movement Atherealong including a pivoted kerf cutter swingable vertically `relative to said Jframe 'to' make a shearv cut in planes parallel to the direction of bodily movement of said kerf cutting mechanism along said guiding frame, motor operated devices for moving said cutting \mechanismy relative to lsaid guiding frame and for swinging said kerf cutter, and `motor operated devices for swinging said guidingframe relative to said support and including a frame swinging element arranged coaxially with theframepivot.

35. VIn a miningmachine, a portable support, a guiding frame pivotally mounted on said support for swingingmovement relative thereto, kerfcutting mechanism mounted on said guiding framefor bodily Ymovement therealong including -a pivoted kert cutter Vswingalole `vertically relative to said frame to makea shear cut in planes parallelv to the direction of bodily movementoi said keri cutting mechanism along said guiding frame, motor operated devices `for swinging said kerl cutter Vand for driving said cutting mechanism, and motor operated devices for moving said cutting mechanism relative to said guiding frame and for swinging said guiding frame relative to .said support, said M frame swinging devices including a frame swinging element arranged coaX'ially with the frame pivot. A

-Y 36.1n a mining machine, a portable support, a guiding frame pivotally mounted on said support for horizontal swinging movement relative thereto, kerf cutting mechanism mounted on said guiding frame for bodily movement therealong including a pivoted kerf cutter swingable vertically relative to said frame to make la shear cut in planes parallel to the direction of bodily movement Y of 4said kerf cutting mechanism along said guiding frame, and motor operated devices lfor feeding said cutting mechanism relative toy said guiding frame, for swinging vertiguiding frame relative to said support, said frame swinging devices including'a frame swinging element arrangedcoaxi ally withthe frame pivot. Y

sa-id'rsupport and for movingsaid cutting cally* said kerf cutter, and for swinging said' Y f3?. In aamining machine, a portable sup'- port, a guiding frame pivotally mounted on saidsupport for horizontal swinging movement relative thereto,kerf cutting mechanismV mounted on said guiding trame for bod- 'i ily movement therealong including a pivoted kerf cutter swingable'vertically relative t0 saidA frame to make a shear cut and a driving motor therefonand devices driven by said motor for swinging said guiding frame relag5 tive to'said support and for moving said cute, ting mechanism relative toy said guiding frame, said frame swinging devices includ-v A ing a frame swinging element arranged co` axially with the frame pivot` so 38.-'In a mining machine, a portable support, a guiding vframe mounted on'said support for horizontal 'swinging movement relative thereto about a vertical axis, kerf cutting mechanism mounted on said guiding frame forlbodilymovement therealong during' the cutting operation, and motor operated devices for swinging said guiding frame` relative to mechanism at a cutting speed Arelative to said guiding frame,fsaid frame'swinging devices including a motor Vmovable with said cutting mechanism along said guiding Aframe and driving connections between saidmotor and a stationary element on said support, the latter being arranged coaXially with the ramepivot.

` 39. Ina mining machine, a portable support, a guiding'iirame mounted on said support to swing horizontally relative thereto about a vertical axis, a Vsliding frame mounted on said guiding Aiframe for bodily movement therealong, a ker-f cutter pivotally mounted on said sliding frame to swing vertically relative thereto about a `horizontal axis at right angles to the direction of bodily movement of said sliding frame along said Vguiding frame, motor operated devices for slidingsaid sliding frame relative to said guidingframe, motor operated devices for swinging said kerf cutter about lits pivot relative to said sliding frame, and motor'operated devices Jfor swinging said guiding frame relative to said support and including a frame swinging element arranged coaXi'ally with the frame pivot,

Y 40. In a mining machine, a portable support, a guiding frame mounted on said support to swing horizontally relative thereto about a vertical axis, a sliding lframe mount- 120 ed on said guiding frame for bodily movement therealong, a kerf cutter pivotally mounted on said sliding frame to swing vertically relative Vthereto about a horizontal axis, motor operated devices forlsliding said Y sliding frame relative to said guiding frame, motor operated devices for swinging said keri cutter about its pivot relative to said sliding frame, andfmotor operated devices for swinging said guiding frame relative to 

